| The University of Iowa | Iowa City, IA | 41 |
| Harvard Medical Faculty Physicians At Beth Israel Deaconess Medical Center | Woburn, MA | 39 |
| Montefiore Medical Center | Bronx, NY | 33 |
| Cleveland Clinic Foundation | Cleveland, OH | 30 |
| Integrated Anesthesia Associates LLC | Hartford, CT | 28 |
| Medical College of Wisconsin, Inc. | Milwaukee, WI | 27 |
| UPMC Medical Education | Pittsburgh, PA | 27 |
| Beth Israel Deaconess Medical Center, Inc. | Boston, MA | 24 |
| Massachusetts General Physicians Organization | Somerville, MA | 23 |
| Oregon Health & Science University | Portland, OR | 19 |
| University of Pittsburgh Physicians | Pittsburgh, PA | 18 |
| University of Alabama Health Services Foundation, PC | Birmingham, AL | 18 |
| Physician Affiliate Group Of Ny, PC | New York, NY | 17 |
| Baystate Medical Practices, Inc. | Springfield, MA | 17 |
| University of Washington | Seattle, WA | 16 |
| Anesthesia Specialists of Bethlehem, P.C. | Bethlehem, PA | 15 |
| Lifespan Physician Group Inc. | Providence, RI | 13 |
| University of Rochester | Rochester, NY | 13 |
| Guthrie Medical Group, P.C. | Sayre, PA | 12 |
| Mayo Clinic | Rochester, MN | 12 |
| UT Regional One Physicians, Inc. | Memphis, TN | 11 |
| BOR USGA obo Augusta University | Augusta, GA | 11 |
| NorthStar Anesthesia of Illinois, LLC | Irving, TX | 11 |
| Brigham and Women's Physicians Organization, Inc | Somerville, MA | 11 |
| University of Arkansas for Medical Sciences | Little Rock, AR | 10 |
| Narragansett Bay Anesthesia, LLC | Providence, RI | 10 |
| UMass Memorial Medical Group, Inc. | Worcester, MA | 10 |
| IU Health Care Associates | Indianapolis, IN | 9 |
| University of Virginia Health Services Foundation | Charlottesville, VA | 9 |
| The University of Kansas Physicians | Kansas City, KS | 9 |
| The University Of Kansas Medical Center | Kansas City, KS | 9 |
| Johns Hopkins University | Baltimore, MD | 9 |
| Children's National Medical Center | Washington, DC | 9 |
| The Leland Stanford, Jr University | Stanford, CA | 8 |
| Geisinger Clinic | Danville, PA | 8 |
| Covenant Medical Center, Inc. | Waterloo, IA | 7 |
| Dartmouth-Hitchcock Clinic | Lebanon, NH | 7 |
| Spectrum Healthcare Partners | South Portland, ME | 7 |
| University of Minnesota Physicians | Minneapolis, MN | 7 |
| CHMC Anesthesia Foundation, Inc. | Boston, MA | 7 |
| Florida Hospital Healthcare Partners, Inc. | Ormond Beach, FL | 7 |
| Cincinnati Children's Hospital Medical Center | Cincinnati, OH | 7 |
| University Of Miami | Miami, FL | 7 |
| Medical Faculty Associates, Inc. | Washington, DC | 7 |
| Pacific Anesthesia, Inc. | Honolulu, HI | 7 |
| Weill Cornell Medical College | New York, NY | 7 |
| Marshfield Clinic | Marshfield, WI | 6 |
| University Of Florida | Gainesville, FL | 6 |
| Icahn School of Medicine at Mount Sinai | New York, NY | 6 |
| Pratt Anesthesiology Associates, Inc. (TMCPO) | Boston, MA | 6 |
| Washington University | St. Louis, MO | 6 |
| Nationwide Children's Hospital | Columbus, OH | 6 |
| Wentworth-Douglass Physician Corporation | Dover, NH | 6 |
| Yuma Regional Medical Center, an Arizona Non-Profit Corporation | Yuma, AZ | 6 |
| Eastern Maine Medical Center | Bangor, ME | 6 |
| Aurora Medical Group, Inc. | Milwaukee, WI | 6 |
| Children's Hospital Corporation | Boston, MA | 5 |
| University of Vermont Health Network Medical Group, Inc. | Burlington, VT | 5 |
| Anesthesia Associates of Ann Arbor PLLC | Ann Arbor, MI | 5 |
| Midwest Anesthesiologists Ltd | Oak Lawn, IL | 5 |
| Abbott Anesthesiologist Associates, P.C. | Buffalo, NY | 5 |
| University Of Kentucky | Lexington, KY | 5 |
| The Metrohealth System | Cleveland, OH | 5 |
| NYU Grossman School of Medicine | New York, NY | 5 |
| Henry Ford Health System | Detroit, MI | 5 |
| Salem Health | Salem, OR | 5 |
| Duke University Health System | Durham, NC | 5 |
| Pacific Anesthesia, P.C. | Bellevue, WA | 5 |
| New York City Health and Hospitals Corporation | New York, NY | 5 |
| Indiana University | Indianapolis, IN | 4 |
| St. Jude Children'S Research Hospital | Memphis, TN | 4 |
| Sheridan Healthcorp, Inc. | Nashville, TN | 4 |
| Iowa Physicians Clinic Medical Foundation | West Des Moines, IA | 4 |
| Anesthesiology Associates of Boro Park, LLP | Brooklyn, NY | 4 |
| Concord Hospital | Concord, NH | 4 |
| Northwest Anesthesia Physicians, P.C. | Springfield, OR | 4 |
| Wellstar Medical Group, LLC | Marietta, GA | 4 |
| Geisinger Medical Center | Danville, PA | 4 |
| The University of Virginia | Charlottesville, VA | 4 |
| University of California, San Francisco | San Francisco, CA | 4 |
| University of Utah | Salt Lake City, UT | 4 |
| Anesthesia Associates of Cincinnati, Inc. | Knoxville, TN | 4 |
| North American Partners in Anesthesia LLP | Sunrise, FL | 4 |
| District Medical Group, Inc | Phoenix, AZ | 4 |
| Anesthesia Associates of Rochester, P.C. | Rochester, NY | 4 |
| MedStar Medical Group Anesthesiology LLC | Columbia, MD | 4 |
| University Hospitals Cleveland Medical Center | Cleveland, OH | 4 |
| St. Luke'S-Roosevelt Hospital Center | New York, NY | 4 |
| Indiana University Health Ball Memorial Physicians, Inc. | Muncie, IN | 4 |
| VCU Health System Authority | Richmond, VA | 4 |
| Morris Anesthesia Group. P.A. | Parsippany, NJ | 4 |
| United Health Services Hospitals, Inc. | Binghamton, NY | 3 |
| Maple-Gate Anesthesiologists, P.C. | Williamsville, NY | 3 |
| Franciscan Medical Group | Tacoma, WA | 3 |
| Cedars-Sinai Medical Center | Los Angeles, CA | 3 |
| West Virginia University Medical Corporation | Morgantown, WV | 3 |
| Rockford Health Physicians | Rockford, IL | 3 |
| Children's Physician Services of South Texas | Corpus Christi, TX | 3 |
| Rhode Island Hospital | Providence, RI | 3 |
| CGF Anesthesiology Assoc P.C. | Buffalo, NY | 3 |
| Parkside Medical Anesthesia Associates, P.C. | Buffalo, NY | 3 |
| Southern Illinois Medical Services | Carbondale, IL | 3 |
| Banner Medical Group | Phoenix, AZ | 3 |
| North American Partners In Anesthesia, Nj, LLC | Melville, NY | 3 |
| The Children's Hospital of Philadelphia | Philadelphia, PA | 3 |
| Westchester Medical Center Advanced Physician Services, PC | Hawthorne, NY | 3 |
| Northwestern University | Evanston, IL | 3 |
| Einstein Practice Plan, Inc. | Philadelphia, PA | 3 |
| Brigham and Women's Hospital | Somerville, MA | 3 |
| University of Colorado | Boulder, CO | 3 |
| St. Joseph Hospital | Bangor, ME | 3 |
| St Joseph Hospital | Bangor, | 3 |
| The Methodist Medical Center of Illinois | Peoria, IL | 3 |
| Baxter County Regional Hospital, Inc. | Mountain Home, AR | 3 |
| Public Health Trust Of Dade County, Florida | Miami, FL | 3 |
| University of Pittsburgh | Pittsburgh, PA | 3 |
| University Physicians of Brooklyn, Inc. | Brooklyn, NY | 3 |
| NorthStar Anesthesia of Delaware, LLC | Irving, TX | 2 |
| Carle Health Care, Incorporated | Champaign, IL | 2 |
| Memorial Health Systems, Inc. | Daytona Beach, FL | 2 |
| OU Health Partners, Inc. | Oklahoma City, OK | 2 |
| University Hospitals Medical Group, Inc. | Cleveland, OH | 2 |
| BMC Affiliated Physicians, Inc. | Boston, MA | 2 |
| Barnes-Jewish Hospital | St. Louis, MO | 2 |
| Affinity Physicians, LLC | Providence, RI | 2 |
| University Anesthesiologists, S.C. | Chicago, IL | 2 |
| Saint Francis Health System | Tulsa, OK | 2 |
| Memorial Sloan Kettering Cancer Center | New York, NY | 2 |
| The Nemours Foundation - Nemours Children's Health | Jacksonville, FL | 2 |
| Hospitalist Medicine Physicians of Georgia – TCS, PC | Nashville, TN | 2 |
| University of Illinois | Urbana, IL | 2 |
| Billings Clinic | Billings, MT | 2 |
| Erie County Medical Center Corporation | Buffalo, NY | 2 |
| UT Southwestern Medical Center | Dallas, TX | 2 |
| North American Partners in Anesthesia Illinois, LLC | Melville, NY | 2 |
| University of Minnesota | Minneapolis, MN | 2 |
| SSM Health Care Group | St. Louis, MO | 2 |
| USA HealthCare Management, LLC | Mobile, AL | 2 |
| US Army Defense Language Institute Foreign Language Center | Monterey, CA | 2 |
| West Virginia University | Morgantown, WV | 2 |
| Edward W. Sparrow Hospital Association | Lansing, MI | 2 |
| Boston Medical Center-Brighton Corporation | Boston, MA | 2 |
| Associated Physicians Of Harvard Med Faculty Physicians At Bidmc, Inc. | Woburn, MA | 2 |
| Rochester General Hospital | Rochester, NY | 2 |
| Ochsner Clinic Foundation | New Orleans, LA | 2 |
| Prisma Health - University Medical Group | Greenville, SC | 2 |
| Columbia University | New York, NY | 2 |
| Roswell Park Cancer Institute | Buffalo, NY | 2 |
| Charter Anesthesiology LLC | West Hartford, CT | 2 |
| University of Louisville | Louisville, KY | 2 |
| Atlanticare Regional Medical Center | Atlantic City, NJ | 2 |
| AU Medical Associates, Inc. | Augusta, GA | 2 |
| Bay Anesthesia Associates, LLC | Dover, DE | 2 |
| Scope Anesthesia of North Carolina, PLLC | Charlotte, NC | 2 |
| The Children's Mercy Hospital | Kansas City, MO | 2 |
| Yale University | New Haven, CT | 2 |
| NorthStar Anesthesia of Michigan III, PLLC | Irving, TX | 2 |
| USA HealthCare Authority | Mobile, AL | 2 |
| Beverly Anesthesiology, Inc. | Los Angeles, CA | 2 |
| American Anesthesiology of Virginia, P.C. | Melville, NY | 2 |
| Lehigh Valley Anesthesia Services, P.C. | Allentown, PA | 1 |
| Maimonides Medical Center | Brooklyn, NY | 1 |
| Professional Anesthesia Services of Kentucky, PLLC | Irving, TX | 1 |
| Anesthesiology Consultants Enterprises PLLC | Lexington, KY | 1 |
| The Mary Imogene Bassett Hospital | Cooperstown, NY | 1 |
| Penn State Milton S. Hershey Medical Center | Hershey, PA | 1 |
| Stony Brook Anesthesiology, UFPC | Stony Brook, NY | 1 |
| Cayuga Medical Associates, P.C. | Ithaca, NY | 1 |
| University of Texas Medical Branch | Galveston, TX | 1 |
| Stamford Anesthesiology Services PC | Stamford, CT | 1 |
| 360 Anesthesia PLLC | Nashville, TN | 1 |
| Mount Sinai Medical Center of Florida | Miami Beach, FL | 1 |
| American Anesthesiology of Virginia, P.C. | Sunrise, FL | 1 |
| The University of Chicago | Chicago, IL | 1 |
| Mount Sinai Hospital | New York, NY | 1 |
| HSA Florida Physician Group Inc. | Fort Lauderdale, FL | 1 |
| Nova Medical Services LLC | Miami, FL | 1 |
| Mercy Hospital, Cedar Rapids, Iowa | Cedar Rapids, IA | 1 |
| Hill Regional Physician Group Inc. | Lancaster, TX | 1 |
| Faculty Physicians & Surgeons of LLUSM | Loma Linda, CA | 1 |
| Orlando Health Inc. | Orlando, FL | 1 |
| Northwestern Memorial HealthCare | Chicago, IL | 1 |
| NorthStar Anesthesia of Florida, LLC | Irving, TX | 1 |
| Anesthesia Innovations, LLC | Honolulu, HI | 1 |
| Clinical Care Associates of the University of Pennsylvania Health System | Bala Cynwyd, PA | 1 |
| Beacon Medical Group | South Bend, IN | 1 |
| Arnot Ogden Medical Center | Elmira, NY | 1 |
| Piedmont Medical Care Corporation | Atlanta, GA | 1 |
| The Lancaster General Hospital | Lancaster, PA | 1 |
| Lancaster General Hospital | Lancaster, PA | 1 |
| Anesthesia Care Consultants, Inc. | Daly City, CA | 1 |
| UNMC Physicians | Omaha, NE | 1 |
| Banner University Medical Group | Phoenix, AZ | 1 |
| Emory University | Atlanta, GA | 1 |
| Baylor College of Medicine | Houston, TX | 1 |
| BMC Health System, Inc. | Boston, MA | 1 |
| Olympic Anesthesia Services, Inc | Bremerton, WA | 1 |
| Sacred Heart Health Services | Yankton, SD | 1 |
| Cape Cod Anesthesia Associates, Inc. | Brockton, MA | 1 |
| NorthStar Anesthesia of Michigan PLLC | Irving, TX | 1 |
| NAPA Management Service Corporation | Melville, NY | 1 |
| Northeast Arkansas Clinic Charitable Foundation, Inc. | Jonesboro, AR | 1 |
| BHS Physicians Network, Inc. | San Antonio, TX | 1 |
| Anesthesia Associates Of Williamsport | Williamsport, PA | 1 |
| Parkview Health System, Inc. | Fort Wayne, IN | 1 |
| Mohawk Valley Anesthesia Group PLLC | Utica, NY | 1 |
| Vanderbilt University Medical Center | Nashville, TN | 1 |
| Trustees Of The University Of Pennsylvania | Philadelphia, PA | 1 |
| Kapi'olani Medical Specialists | Honolulu, HI | 1 |
| UVA Community Health Medical Group, LLC | Manassas, VA | 1 |
| Anesthesia Consultants of Augusta, LLC | Augusta, GA | 1 |
| University of Wisconsin Medical Foundation | Middleton, WI | 1 |
| Temple University Hospital, Inc | Philadelphia, PA | 1 |
| East River Medical Associates, P.C. | New York, NY | 1 |
| Atlantic Coast Anesthesia Services, PC | Knoxville, TN | 1 |
| University of Wisconsin System | Madison, WI | 1 |
| The Ohio State University | Columbus, OH | 1 |
| University of New Mexico | Albuquerque, NM | 1 |
| Christus Trinity Clinic New Mexico, LLC | Alamogordo, NM | 1 |
| One Anesthesia, PLLC | Louisville, KY | 1 |
| Obstetric Anesthesia Consultants PSC | Louisville, KY | 1 |
| East Memphis Anesthesia Serices, PLC | Memphis, TN | 1 |
| Carle West Physician Group, Inc. | Champaign, IL | 1 |
| Boston Medical Center Corporation | Boston, MA | 1 |
| Midwest Anesthesia Partners, LLC | Naperville, IL | 1 |
| The Permanente Medical Group, Inc. | Pleasanton, CA | 1 |
| Tampa Bay Anesthesiology Associates LLC | Wesley Chapel, FL | 1 |
| Valley Children'S Specialty Medical Group, Inc. | Madera, CA | 1 |
| NorthStar Anesthesia of Virginia, LLC | Irving, TX | 1 |
| Prisma Health Medical Group - Midlands | Greenville, SC | 1 |
| Anesthesiologists of Greater Orlando, Inc. | Nashville, TN | 1 |
| Northern Arizona Healthcare Corporation | Flagstaff, AZ | 1 |
| CHI St. Alexius Health | Bismarck, ND | 1 |
| LSU Health Sciences Center - Shreveport | Shreveport, LA | 1 |
| Jackson Anesthesiology Group, PLLC | Jackson, | 1 |
| Santa Rosa Anesthesia Medical Group | Santa Rosa, CA | 1 |
| Mercy Health System Corporation | Janesville, WI | 1 |
| Acadia Medical Arts Anesthesia, LLC | Bangor, ME | 1 |
| University of Louisville Physicians, Inc. | Louisville, KY | 1 |
| Palmetto Anesthesia Specialists, LLC | Knoxville, TN | 1 |
| Carroll County Anesthesia Associates, P.A. | Westminster, MD | 1 |
| Lahey Clinic, Inc. | Burlington, MA | 1 |
| Upstate Medical Anesthesiology Group, Inc. | Syracuse, NY | 1 |
| Seven Hills Anesthesia LLC | Cincinnati, OH | 1 |
| Anesthesia Group Practice Inc. | Cincinnati, OH | 1 |
| University of Oklahoma | Norman, OK | 1 |
| Inland Empire Anesthesia Medical Group, Inc. | Claremont, CA | 1 |
| Advocate Health and Hospitals Corporation | Oak Brook, IL | 1 |
| The Brookdale Hospital Medical Center | Brooklyn, NY | 1 |
| South Central Regional Medical Center | Laurel, MS | 1 |
| Northwell Health | New Hyde Park, NY | 1 |
| Excela Health Physician Practices, Inc. | Greensburg, PA | 1 |
| Pinnacle Health Medical Services | Pittsburgh, PA | 1 |
| Luis Velazquez, M.D. PLLC | Las Vegas, NV | 1 |
| Permian Premier Health Services, Inc. | Dallas, TX | 1 |
| Massachusetts Eye and Ear Associates | Somerville, MA | 1 |
| Steward St. Elizabeth’s Medical Center of Boston, Inc | Boston, MA | 1 |
| Certified Anesthesia Services PLLC | Knoxville, TN | 1 |
| Continental Anesthesia, Ltd | Oak Brook, IL | 1 |
| Boca Anesthesia Services, Inc. | Nashville, TN | 1 |
| Punxsutawney Area Hospital | Punxsutawney, PA | 1 |
| Cardiovascular Anesthesia Consultants of Central Florida | Ocala, FL | 1 |
| Excellent Anesthesia and Pain Management Company | Ahoskie, NC | 1 |
| University of Vermont Health Network Medical Group | South Burlington, VT | 1 |
| ProMedica Central Physicians | Toledo, OH | 1 |
| Oregon Health and Sciences University | Portland, OR | 1 |
| Berkshire Medical Center | Pittsfield, MA | 1 |
| Citrus Cardiovascular Anesthesia Associates, P.L.L.C. | Ocala, FL | 1 |
| Mido MD PLLC | Bangor, ME | 1 |
| New Jersey Healthcare Specialists, P.C. | Nashville, TN | 1 |
| Pediatric Anesthesia Associates | Detroit, MI | 1 |
| Allied Anesthesia Medical Group | Santa Ana, CA | 1 |
| East Bay Medical Group, Inc. | Oakland, CA | 1 |
| Anesthesia Associates Of Williamsport | Willamsport, PA | 1 |